随机数:
打开python命令行
随机整数:
>>> import random
>>> random.randint(0,99)
21
随机选取0到100间的偶数:
>>> import random
>>> random.randrange(0, 101, 2)
42
随机浮点数:
>>> import random
>>> random.random()
0.85415370477785668
>>> random.uniform(1, 10)
5.4221167969800881
随机字符:
>>> import random
>>> random.choice('abcdefg^*f')
'd'
多个字符中选取特定数量的字符:
>>> import random
random.sample('abcdefghij',3)
['a', 'd', 'b']
多个字符中选取特定数量的字符组成新字符串:
>>> import random
>>> import string
>>> string.join(random.sample(['a','b','c','d','e','f','g','h','i','j'], 3)).r
eplace(" ","")
'fih'
随机选取字符串:
>>> import random
>>> random.choice ( ['apple', 'pear', 'peach', 'orange', 'lemon'] )
'lemon'
洗牌:
>>> import random
>>> items = [1, 2, 3, 4, 5, 6]
>>> random.shuffle(items)
>>> items
[3, 2, 5, 6, 4, 1]
字符串倒序
>>> str='http://www.google.com'
>>> print str[::-1]
moc.elgoog.www//:ptth
发送GET请求
01 >>> import httplib
02 >>> conn = httplib.HTTPConnection("ycg1213.sinaapp.com")
03 >>> conn.request("GET", "ipwork/rule_firewall.php")
04 >>> r1 = conn.getresponse()
05 >>> print r1.status, r1.reason
06 200 OK
07 >>> data1 = r1.read()
08 >>> print data1
正则表达式模块使用
import re
搜索字符串中的ip地址,group函数将显示出匹配到的字符串,正常需要判断结果是否为空
m = re.search('\d{1,3}.\d{1,3}.\d{1,3}.\d{1,3}', '127.0.0.1', 'url=jdbc:mysql://192.168.10.123:3306/testdb?use')
if m is not None: m.group()
替换字符串中的ip地址为127.0.0.1
print re.sub('\d{1,3}.\d{1,3}.\d{1,3}.\d{1,3}', '127.0.0.1', 'url=jdbc:mysql://192.168.10.123:3306/testdb?use')